Review on 🐠 Pawfly Plastic One Way Non-Return Check Valve for Aquarium Air Pump by Melinda Coleman

UPDATE: So complete nonsense. 2 of these don't work and I'm going back. Don't even waste your money! So they're worth the money if you have a larger diameter air hose, I'm talking more than a standard air hose. Unfortunately 2 different airlines I tried didn't match these. I found one that worked if you were struggling with it, and even then it was only partially activated. The ends of the check valve really needed to be tapered to work properly. I hate to say it but you get what you pay for.